2010 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2010 Factory Service Manual AV-28
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “SETTING” button, turn t

AV-28
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “SETTING” button, turn the volume control
dial counterclockwise 30 clicks or more.
CONFIRMATION/
ADJUSTMENT Display diagnosis
Color spectrum bar Color tone of the screen can be checked by the display of a color bar.
Gradation bar Shading of the screen can be checked by the display of a gray scale.
Touch panel
• Touch panel calibration
• Touch panel response check
Vehicle signals The following vehicle signals are analyzed: Vehicle speed signal, park-
ing brake signal, light signal, ignition switch signal, and reverse signal.
Speaker test Connection can be checked by sending a test tone to each speaker.
Navigation Steering angle ad-
justment
Confirm/adjust the steering angle when there is a difference between
the displayed vehicle mark turning angle and actual.
Speed calibration Confirm/adjust the speed calibration when there is a difference between
the displayed vehicle mark location and actual.
XM SAT subscrip-
tion status Check the subscription status of the XM NAV Traffic subsription.
Error history Diagnosis results previously stored in the memory are displayed in this
mode.
Synchronize FES clock Turns FES (Familly Entertainment System) clock synchronization func-
tion ON/OFF.
Vehicle CAN diagnosis The transmitting/receiving of CAN communication can be monitored.
AV COMM diagnosis The transmitting/receiving of AV communication can be monitored.
Handsfree phone Handsfree volume
adjustment
Adjust handsfree volume (low, medium, high).
Voice microphone
test Test microphone operation.
Delete handsfree
memory Erase handsfree system memory.
Bluetooth Confirm/Change
passkey
Confirm and change the Bluetooth passkey
Confirm/Change
device name Confirm and change a device name stored in Bluetooth.
SAT Change channel
Any necessary channels required to recieve traffic information from the
satellite radio system can be set.
Change applica-
tion ID Any application ID’s required to recieve traffic information from the sat-
ellite radio system can be set.
Diag Not used.
Delete unit connection log Erase the error history and connection history of the unit.
Initialize settings All audio settings are reset to default levels.
Mode
Description
ALNIA0446GB
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual AV
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< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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4. The initial trouble diagnosis screen will be displayed, and items “Self-Diagnosis”

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INFINITI QX56 2010 Factory Service Manual AV-30
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Area with yellow connection lines
DescriptionPossible malfunction location / Action
to take
AV control unit malfunction i

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< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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CONFIRMATION/ADJUSTMENT MODE
1. Start the diagnosis function and select “Confirmati on/

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INFINITI QX56 2010 Factory Service Manual AV-32
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Display Diagnosis
The tint of the color bar indication is as per the following list if RGB signal error is detected.
Vehic

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Sp ea ke r Tes t
Select “Speaker Test” to display the speaker diagnosis screen. Press

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INFINITI QX56 2010 Factory Service Manual AV-34
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
XM SAT SUBSCRIPTION STATUS
The XM NavTraffic subscription status can be checked.
Error History
The self-diagnosis result

AV-34
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
XM SAT SUBSCRIPTION STATUS
The XM NavTraffic subscription status can be checked.
Error History
The self-diagnosis results are judged depending on whether any
error occurs from when “Self-diagnosis” is selected until the self-
diagnosis results are displayed.
However, the diagnosis results are judged normal if an error has
occurred before the ignition SW is turned ON and then no error has
occurred until the self-diagnosis start. Check the “Error History” to
detect any error that may have occurred before the self-diagnosis
start because of this situation.
Count up method A
• The counter resets to 0 if an error occurs when IGN switch is
turned ON. The counter increases by 1 if thecondition is normal at
a next IGN ON cycle.
• The counter upper limit is 39. Any counts exceeding 39 are ignored. The counter can be reset (no error- record display) with the “Delete log” switch or CONSULT-III.
Count up method B
• The counter increases by 1 if an error occurs when IGN switch is ON. The counter will not decrease even
ifthe condition is normal at the next IGN ON cycle.
• The counter upper limit is 50. Any counts exceeding 50 are ignored. The counter can be reset (no error- record display) with the “Delete log” switch or CONSULT-III.
Error item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items
ALNIA0225GB
Display method of occur- rence frequency Error history diplay item
Count up method A CAN communication line, control unit (CAN), AV communication line, control unit (AV communica-
tion)
Count up method B Other than above
Error item DescriptionPossible malfunction factor/Action to take
CAN COMM CIRCUIT CAN communication malfunction is detect-
ed.Perform diagnosis with CONSULT-III, and
then repair the malfunctioning parts accord-
ing to the diagnosis results.
Refer to
AV- 3 8 , "
AV CONTROL UNIT :
CONSULT-III Function".
ALNIA0226GB
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual AV
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< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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CONTROL UNIT (CAN) CAN initial diagnosis malfunction is detect-
ed.
Replace the AV contro

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CONTROL UNIT (CAN) CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit. Refer to AV-
169, "Removal and Installation".
CONTROL UNIT (AV)
AV communication circuit initial diagnosis
malfunction is detected.
FLASH-ROM Error Of Control Unit
AV control unit malfunction is detected.
Connection Of Gyro
XM SERIAL COMM Error
CAN Controller Memory Error
Bluetooth Module Connection Error
HDD CONN Error
HDD READ Error
HDD WRITE Error
HDD COMM Error
HDD ACCESS Error
DSP CONN Error
DSP COMM Error
Internal Communication Error
AV control unit power supply and ground
circuit. Refer to
AV- 6 8 , "
AV CONTROL
UNIT : Diagnosis Procedure".
GPS Communication Error
GPS malfunction is detected.An intermittent error ca
used by strong radio
interference may be detected unless any
symptoms (GPS reception error, etc.) oc-
cur.
Replace the AV control unit ff the malfunc-
tion occurs constantly. Refer to AV- 1 6 9 ,
"Removal and Installation".
GPS ROM Error
GPS RAM Error
GPS RTC Error
Front Display Connection Error
• Display unit power supply and ground
circuit malfunction is detected.
• Malfunction is detected on communica- tion circuit between display unit and AV
control unit.
• Malfunction is detected on communica- tion signal between display unit and AV
control unit. • Display unit power supply and ground
circuit. Refer to AV- 6 9 , "
DISPLAY UNIT :
Diagnosis Procedure".
• Communication circuit between display
unit and AV control unit.
GPS Antenna Error GPS antenna connection malfunction is de-
tected.
GPS antenna
XM Antenna Connection Error Poor connection is detected in satellite ra-
dio antenna.Satellite radio antenna
Camera Control Unit Connection Error A malfunction is detected in the rear view
camera-connection recognition signal cir-
cuit.Rear view camera-connection recognition
signal circuit.
• AV COMM CIRCUIT
• Switches Connection Error • A/C and AV switch assembly power sup-
ply and ground circuit malfunction is de-
tected.
• A malfunction is detected in AV commu- nication circuit between AV control unit
and A/C and AV switch assembly.
• A malfunction is detected in AV commu- nication signal between AV control unit
and A/C and AV switch assembly. • A/C and AV switch assembly power sup-
ply and ground circuits. Refer to AV- 7 0 ,
"A/C AND AV SWITCH ASSEMBLY : Di-
agnosis Procedure".
• AV communication circuit between AV
control unit and A/C and AV switch as-
sembly.
Error item
DescriptionPossible malfunction factor/Action to take
Revision: April 20092010 QX56

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